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WO2011047606A1 - Procédé et dispositif de retransmission adaptative d'accès par paquets en liaison montante haut débit - Google Patents

Procédé et dispositif de retransmission adaptative d'accès par paquets en liaison montante haut débit Download PDF

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Publication number
WO2011047606A1
WO2011047606A1 PCT/CN2010/077762 CN2010077762W WO2011047606A1 WO 2011047606 A1 WO2011047606 A1 WO 2011047606A1 CN 2010077762 W CN2010077762 W CN 2010077762W WO 2011047606 A1 WO2011047606 A1 WO 2011047606A1
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WO
WIPO (PCT)
Prior art keywords
retransmissions
target
limited
resource
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2010/077762
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English (en)
Chinese (zh)
Inventor
黄鑫
戴丁樟
王宏伟
郭房富
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP10824447.6A priority Critical patent/EP2493107B1/fr
Publication of WO2011047606A1 publication Critical patent/WO2011047606A1/fr
Priority to US13/449,967 priority patent/US8902918B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/188—Time-out mechanisms
    • H04L1/1883—Time-out mechanisms using multiple timers

Definitions

  • High-speed uplink packet access adaptive retransmission method and device are submitted to the Chinese Patent Office on October 20, 2009, and the application number is 200910205509.9, and the invention name is "high-speed uplink packet access adaptive retransmission method and device" Priority of Chinese Patent Application, the entire contents of which is incorporated herein by reference.
  • the present invention relates to the field of communications technologies, and in particular, to a high speed uplink packet access (HSUPA, High Speed Uplink Packet Access) adaptive retransmission method and apparatus.
  • HSUPA High Speed Uplink Packet Access
  • WCDMA Wideband Code-Division Multiple Access
  • the method of performing QoS (Quality of Service) control in HSUPA is: setting a fixed "target retransmission times" parameter, so that the number of times of communication (NHR, Number of HARQ Retransmissions) converges to the "" The number of target retransmissions.”
  • the retransmission method used here is Hybrid Automatic Repeat Request (HARQ), and the HARQ retransmission uses an acknowledgment mechanism.
  • HARQ Hybrid Automatic Repeat Request
  • ACK/NACK acknowledgment/failure response
  • ACK/NACK 1-bit signal
  • the "target retransmission times" in the prior art are generally fixedly configured.
  • the "retarget retransmission times” configuration is small, because the number of HARQ retransmissions is small, the UEs in the center of the cell and the cells in the cell are lightly loaded, and the transmission rate can approach or reach the limit as the physical layer rate increases rapidly. Rate (ie maximum theoretical transmission rate).
  • Rate ie maximum theoretical transmission rate
  • the transmission power is easily limited.
  • TB Transport Block
  • the UE transmission rate is also limited by the load and cannot be increased. If you can configure it at this time
  • the larger "target retransmission times" can improve the power efficiency by obtaining the diversity gain, and can still improve the transmission rate of the UE at the cell coverage edge and the UE with the heavy cell. It can be seen that the configuration of the smaller "target retransmission times" cell capacity will also be limited.
  • the UEs with the limited transmit power at the cell coverage edge or the UEs with higher load in the cell may obtain diversity from the UE because of the large number of HARQ retransmissions.
  • the gain in order to obtain higher power efficiency, increases the amount of data transmitted by these UEs, while also increasing the cell capacity.
  • the cell load is light, the physical layer rate of the UE in the cell center can be quickly approached or reach the maximum theoretical transmission rate, but because of the high number of HARQ retransmissions, the effective transmission rate of the UE in the center of the lightly loaded cell But it can't reach the maximum, and it will double the number of retransmissions, which will affect the user's feelings.
  • the technical problem to be solved by the embodiments of the present invention is to provide a high-speed uplink packet access adaptive retransmission method and device, which can effectively improve resource utilization.
  • An embodiment of the present invention provides a high-speed uplink packet access adaptive retransmission method, including:
  • the number of retransmissions of the target of the UE is at a predetermined number of retransmission times of the large target and the small target Adjust between retransmission times;
  • a high-speed uplink packet access adaptive retransmission device including: an acquiring unit, configured to acquire a resource limited condition;
  • an adjustment decision unit configured to perform an adjustment decision according to the resource limited condition acquired by the acquiring unit and the current target retransmission times of the UE;
  • An execution unit configured to retransmit the UE target according to the result of the adjustment decision unit adjusting the decision
  • the number of times is adjusted between a predetermined number of large target retransmissions and a small number of retransmission times; the number of large target retransmissions is greater than the number of small target retransmissions.
  • FIG. 1 is a schematic flowchart of a high-speed uplink packet access adaptive retransmission method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a high-speed uplink packet access adaptive retransmission method according to another embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for adaptive retransmission of a high-speed uplink packet access according to still another embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for adaptive retransmission of a high-speed uplink packet access according to still another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a high speed uplink packet access adaptive retransmission apparatus according to an embodiment of the present invention.
  • the embodiment of the invention provides a high-speed uplink packet access adaptive retransmission method and device, which can effectively improve resource utilization.
  • the high-speed uplink packet access adaptive retransmission method includes: acquiring a resource limited condition of various resources; performing an adjustment decision according to the resource limited condition and the current target retransmission times of the UE; As a result of the adjustment decision, the number of retransmissions of the UE is adjusted between a predetermined number of retransmissions of the large target and the number of retransmissions of the small target; wherein the number of retransmissions of the large target is greater than the number of retransmissions of the small target.
  • Adjusting the decision according to the resource limited condition and the current target retransmission times of the UE includes: when the predetermined time is reached, the adjustment decision is made according to the resource limited condition and the current target retransmission times of the UE.
  • the resource-restricted situation is related to the adjustment of the number of retransmissions of the target, and may include: a limited load condition of the cell, a UE (user equipment) transmission power limitation, a UE physical capability limitation, and a channel unit (CE) resource. At least one of the limited circumstances.
  • FIG. 1 is a high-speed uplink packet access adaptation according to an embodiment of the present invention.
  • the method for determining the load limitation of the cell may be to preset an RTWP threshold, compare the RTWP of the acquired cell with the RTWP threshold, and if it is higher than the predetermined RTWP threshold, consider the The load of the cell in which the UE is located is limited; if it is lower than the predetermined RTWP threshold, the load of the cell in which the UE is located is considered to be unrestricted.
  • the load limitation of the cell is prevented from changing too frequently before being restricted and unrestricted, and the dual RTWP threshold can be used as a judgment condition, and an upper threshold of the RTWP is reserved, and an RTWP lower threshold, the RTWP is on the door.
  • the limit is higher than the lower threshold of the RTWP. If the RTWP of the cell is higher than the predetermined upper threshold, the load of the cell where the UE is located is considered to be limited.
  • the load of the cell where the UE is located is considered to be If it is between the threshold of the RTWP and the threshold of the RTWP, the load limited state of the cell is not changed, that is, if the load limited state of the cell is restricted, it remains restricted, if not The limit is still unlimited.
  • the timing of performing this step may be event triggering; or may be periodic triggering, that is, when the predetermined time is reached, the adjustment decision is made according to the resource limitation.
  • the RTWP of the system may be too high and the load is too heavy. Therefore, in actual application, preferably, multiple UEs in one cell are not allowed to adjust the "target retransmission times" at the same time. Otherwise, It will cause the RTWP to fluctuate greatly and be unstable, and it is prone to ping-pong phenomenon.
  • the periodic triggering method can be preferentially used, for example, with a longer period triggering, which can minimize the impact of the number of retransmissions on the RTWP, and can also reduce the number of times ping-pong occurs, and at the same time reduce the system resources. Consumption.
  • the ordering rule for making adjustment decisions in this embodiment mainly considers one or more of the following factors:
  • the first type of UE at the cell edge can be preferentially adjusted to "the number of large target retransmissions". Because these UEs are more likely to be slowed down, or even dropped, let them use "large target retransmission times", you can The amount of data transmitted by the UE is more effectively improved, and higher power efficiency is obtained, and the cell capacity is also objectively increased.
  • the sorting rules of the scheduling algorithm can be used for sorting.
  • the "small target retransmission times" is adjusted to the "large target retransmission times”
  • the transmission block needs to be rapidly increased, so it should be sorted according to the scheduling algorithm.
  • the scheduling algorithm should be used to slow down the sorting method.
  • the UE sorts the number of retransmissions of small targets.
  • the preset number of retransmissions of the large target is used as the target retransmission number of the UE according to the adjustment decision result.
  • the rate is also limited and cannot be improved.
  • the retransmission is performed using a large number of target retransmissions, and the diversity gain can be obtained, thereby improving power efficiency, improving the UE transmission rate and the cell transmission rate, and improving the cell capacity.
  • the load of the cell in which the UE is located is not limited, and the UE currently uses the number of retransmissions of the large target, the preset number of retransmissions of the small target is used as the target retransmission number of the UE according to the adjustment decision result.
  • the load of the cell is not limited, that is, the load is light, and the number of retransmissions of the target can be used to make the effective rate of the UE approach or reach the limit rate as the physical layer rate increases rapidly, thereby greatly improving the UE experience.
  • the high-speed uplink packet access adaptive retransmission method provided by the embodiment of the present invention can adjust the number of target retransmissions according to the load condition of the cell, which can effectively improve the resource utilization rate.
  • the high-speed uplink packet access adaptive retransmission method provided by another embodiment of the present invention is adjusted according to the UE transmit power limitation.
  • FIG. 2 is a high-speed uplink packet access adaptive retransmission according to another embodiment of the present invention. Method flow chart, the method includes:
  • the first type determines whether the transmit power of the UE is limited according to the 6A event and the 6B event reported by the UE, and the transmit power measured by the UE continues for a period of time.
  • the 6A event is reported, indicating that the UE's transmit power is limited
  • the 6B event is reported, indicating that the UE's transmit power is not limited.
  • the second method is to determine whether the UE's transmit power is limited according to the UE's UE transmit power headroom (UPH) measurement value.
  • the UPH reported by the UE indicates the current remaining transmit power of the UE.
  • the comparison of the transmit powers may result in whether the UE's transmit power of the UE is limited.
  • the UE transmit power is lower than the predetermined power threshold to indicate that the UE's transmit power is not limited.
  • the UE transmit power is higher than the predetermined power threshold to indicate the UE's transmit. Power is limited.
  • Adjusting the decision according to the UE transmit power limitation determining whether the target retransmission number of the UE is adjusted between the predetermined large target retransmission times and the small target retransmission times, and the preset large target retransmission times is greater than the small target weight. Number of passes.
  • the condition of the large target retransmission is used, and the UE may be limited in transmission power, and the predetermined number of times of retransmission using the small target may be used. That is, when the UE transmit power is limited, and the UE currently uses the small target retransmission times, the result of the adjustment decision is to adjust the target retransmission times of the UE from the small target retransmission times to the large target retransmission times; When the power is not limited, and the UE currently uses the number of large target retransmissions, the result of the adjustment decision is to adjust the number of retransmissions of the UE from the number of retransmissions of the large target to the number of retransmissions of the small target.
  • the timing of performing this step may be an event trigger or a periodic trigger.
  • the periodic trigger refer to the description in step 103 above.
  • 203. Adjust, according to the result of the adjustment decision, a target retransmission number of the UE between a predetermined number of large target retransmissions and a small number of retransmission times.
  • the preset large target retransmission times are used as the target retransmission times of the UE according to the adjustment decision result, and at this time, more HARQ retransmissions are performed.
  • the diversity gain is obtained therefrom, and the power efficiency is improved, thereby reducing the demand for the transmission power, and finally increasing the transmission rate of the UE.
  • the UEs at the edge of the cell are easily limited in transmission power, and the UEs use the preset number of retransmissions of the large target as the number of retransmissions to retransmit, which can improve the UE transmission rate and increase the cell coverage.
  • the preset small target retransmission number is used as the target retransmission number of the UE according to the adjustment decision result, and the UE transmit power is no longer affected.
  • Limitation using a smaller number of target retransmissions can make its effective rate close to, or reach the limit rate, thereby greatly improving the UE experience.
  • the high-speed uplink packet access adaptive retransmission method provided by the embodiment of the present invention can adjust the number of target retransmissions according to the UE transmit power limitation, which can effectively improve resource utilization.
  • FIG. 3 is a high-speed uplink packet access adaptive retransmission according to another embodiment of the present invention.
  • Method flow chart the method includes:
  • the method of obtaining the restricted condition of the channel unit resource is similar to the method of acquiring the load limitation of the cell, and the method of the predetermined threshold can be used to determine whether the channel unit resource is restricted.
  • a channel unit CE number threshold is reserved, and the total number of CEs used is compared with the CE number threshold. If the threshold is higher than the predetermined CE number threshold, the channel unit resources are considered to be limited; if the number of CEs is lower than the predetermined number of CEs For the threshold, the channel unit resources are considered to be unrestricted.
  • a threshold of the number of CEs is reserved, a threshold of the number of CEs, and the upper threshold of the number of CEs is greater than the threshold of the number of CEs. If the total number of CEs is higher than the predetermined upper threshold, the channel unit resources are considered to be limited; If the number of CEs is lower than the predetermined lower threshold, the channel unit resources are considered If the total CE number is between the CE threshold and the CE threshold, the channel unit resource is not changed. Not limited.
  • Adjusting the decision according to the channel unit resource power limitation determining whether the target retransmission number of the UE is adjusted between the predetermined large target retransmission times and the small target retransmission times, and the preset large target retransmission times is greater than the small target. The number of retransmissions.
  • the result of the adjustment decision is to select the UE that is currently using the large target retransmission number, and adjust the target retransmission times of the UE from the large target retransmission number to the small target.
  • the number of retransmissions that is, when the channel unit resources are limited, the number of target retransmissions selected by the UE is adjusted from "the number of retransmissions of the large target" to the "number of retransmissions of the small target" until the channel unit resources are not limited.
  • the timing of performing this step may be an event trigger or a periodic trigger.
  • a periodic trigger refer to the description in step 103 above.
  • the result of the adjustment decision is that when the number of target retransmissions of the UE is adjusted from the number of small target retransmissions to the number of large target retransmissions, it may be determined whether the channel unit resource is Restricted, if the channel unit resource is not limited, the target retransmission number of the UE is adjusted between the predetermined large target retransmission times and the small target retransmission times according to the result of the adjustment decision.
  • the UE that uses the "large target retransmission times" is selected, and the preset small target retransmission number is used as the target retransmission number of the selected UE according to the adjustment decision result, and the selected UE is selected.
  • Retransmission is performed using the preset number of small target retransmissions as the number of target retransmissions.
  • the load limitation of the cell may be prioritized. If the cell load is high, even if the CE is limited, there is no need to select a target to be adopted by the UE. The number of retransmissions is adjusted from "number of retransmissions of large targets" to "number of retransmissions of small targets”.
  • the power efficiency of the UE under high load is more important than the CE efficiency, although the use of "large The CE efficiency of the target retransmission times is lower than the "number of retransmissions of the small target", but the power efficiency of the "number of retransmissions of the large target” is obviously higher; therefore, it is necessary to maintain the "target retransmission times" of the UE.
  • the number of transmissions is "to maintain a higher transmission rate of the cell.
  • the power efficiency here can be understood as the UE transmission rate that can be carried by the unit power.
  • the CE efficiency refers to the UE transmission rate provided by the unit channel unit resource.
  • the third embodiment of the high-speed uplink packet access adaptive retransmission method provided by the present invention can adjust the number of retransmissions according to the limitation of the channel unit resources, which can effectively improve the resource utilization.
  • the high-speed uplink packet access adaptive retransmission method provided by the embodiment of the present invention is adjusted according to the limited physical capability of the UE, and FIG. 4 is a high-speed uplink packet access adaptive retransmission provided by another embodiment of the present invention.
  • Method flow chart, the method includes:
  • the UE uses the preset large target retransmission times as the target retransmission times for retransmission, and the used transport block has reached the maximum value specified by the protocol, that is, the physical layer is almost full rate transmission, and the effective rate can no longer be used. Therefore, the UE is considered to have limited physical capabilities. Otherwise, the UE's physical capabilities are not limited.
  • the UE transmission rate is always limited, and finally the fairness difference between the UEs is deteriorated. , affecting the UE experience.
  • the result of the adjustment decision is to adjust the "number of retransmissions of the large target" to the "number of retransmissions of the small target” to reduce
  • the number of HARQ retransmissions is increased, and the transmission efficiency is improved, thereby improving the transmission rate of the UE.
  • the adjustment result is not to change the current number of retransmissions of the UE.
  • the timing of performing this step may be an event trigger or a periodic trigger.
  • a periodic trigger refer to the description in step 103 above.
  • the fourth embodiment of the high-speed uplink packet access adaptive retransmission method can adjust the number of retransmissions according to the limited physical capacity of the UE, which can effectively improve the utilization of resources.
  • the foregoing embodiments of the high-speed uplink packet access adaptive retransmission method describe the load limitation of the cell, the UE transmit power limitation, the channel unit resource limitation, and the UE physical capability limitation, respectively.
  • the system can simultaneously refer to the load limited condition of the cell, the UE transmit power limited condition, the UE physical capability limited condition, and the plurality of adjustment target retransmission times in the channel unit resource limited situation, the priority of the four restricted cases. It can be arranged according to the actual situation. For example, the priority of the load limited condition of the cell may be the highest, and when the load of the cell is limited, the preset number of retransmissions of the large target is kept as the number of retransmissions of the target for retransmission.
  • the effective rate supported by the "large target retransmission times" is significantly lower than the "small target retransmission times"
  • the UE's rate will not decrease, and the target used by the UE
  • the effective rate should be lower than a certain threshold, for example, lower than the limit rate for retransmission using the number of retransmissions of large targets; If the rate is higher than the limit rate for retransmission using the number of retransmissions of the large target, no adjustment is made, and the "small target retransmission times" is continuously used for retransmission to preferentially guarantee the effective rate of the UE.
  • a high-speed uplink packet access adaptive retransmission method includes:
  • the number of retransmissions of the target of the UE is at a predetermined number of retransmission times of the large target and the small target
  • the number of retransmissions is adjusted; the number of retransmissions of the large target is greater than the number of retransmissions of the small target.
  • the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the high-speed uplink packet access adaptive retransmission device may be implemented by a device on the network side, such as a base station (NodeB), a radio network controller (RNC, Radio Network Controller), etc.
  • the method includes: an obtaining unit 501, configured to acquire a resource-restricted condition; an adjustment determining unit 502, configured to perform an adjustment decision according to the resource limited situation acquired by the acquiring unit 501 and the current target retransmission times of the UE; And adjusting, according to the result of the adjustment decision unit 502, the target retransmission number of the UE, between a predetermined number of large target retransmission times and a small target retransmission number; the large target retransmission times being greater than the small target The number of retransmissions.
  • the acquiring unit 501 includes: a first acquiring unit, configured to compare a total received bandwidth power of the cell with a preset total bandwidth threshold for receiving, if the resource is limited If the total bandwidth of the received bandwidth is higher than the preset total bandwidth of the received bandwidth, the load of the cell in which the UE is located is considered to be limited.
  • the The load of the cell in which the UE is located is not limited;
  • the second obtaining unit is configured to compare the total received bandwidth power of the cell with a preset total bandwidth power threshold, and if the total received bandwidth power of the cell is higher than a preset upper threshold of the total received bandwidth power, The load of the cell in which the UE is located is considered to be limited. If the total bandwidth of the received cell is lower than the threshold of the total received bandwidth, the load of the cell in which the UE is located is not limited.
  • the adjustment decision unit 502 includes:
  • a first adjustment decision unit configured to: when the load of the cell where the UE is located is limited, and the UE currently uses the number of small target retransmissions, the result of the adjustment decision is that the number of retransmissions of the UE is determined by the predetermined small target. The number of retransmissions is adjusted to the number of large target retransmissions; and/or
  • the result of the adjustment decision is to adjust the number of retransmissions of the UE by the predetermined number of retransmissions of the target to The number of small target retransmissions.
  • the acquiring unit 501 includes: a third obtaining unit, configured to determine, according to the 6A event and the 6B event reported by the UE, whether the UE transmit power is limited;
  • a fourth acquiring unit configured to acquire, by using a UE transmit power available space reported by the UE, a transmit power size currently used by the UE, and compare, by using, a current transmit power size of the UE with a predetermined power threshold to determine a UE transmit Is the power limited?
  • the adjustment decision unit 502 includes:
  • a second adjustment decision unit configured to: when the UE transmit power is limited, and the UE currently uses the small target retransmission times, the result of the adjustment decision is that the target retransmission times of the UE are small by the small target
  • the number of passes is adjusted to the number of large target retransmissions
  • the result of the adjustment decision is to adjust the number of target retransmissions of the UE from the number of large target retransmissions to small.
  • the number of target retransmissions is not limited, and the UE currently uses the number of large target retransmissions.
  • the obtaining unit 501 includes: a fifth obtaining unit, configured to compare the total number of CEs used with a preset threshold of the number of CEs, where the resource is limited. If the total CE number is higher than the preset CE number threshold, the channel unit resource is considered to be limited, and if the total CE number is lower than a preset CE number threshold, the channel unit resource is considered to be unrestricted. Or the sixth obtaining unit is configured to compare the total CE number with a preset CE number threshold, and if the total CE number is higher than a preset CE number upper threshold, the channel unit resource is considered to be limited. If the total number of CEs is lower than a threshold of the preset number of CEs, the channel unit resources are considered to be unrestricted.
  • the adjustment decision unit 502 includes:
  • a third adjustment decision unit configured to: when the channel unit resource is limited, the result of the adjustment decision is to select a UE that is currently using a large target retransmission number, and the target retransmission number of the UE is heavily weighted by a large target. The number of passes is adjusted to the number of small target retransmissions.
  • the acquiring unit 501 includes: a seventh acquiring unit, configured to retransmit the UE using the preset number of retransmission times as the target retransmission number, and the physical layer is almost At full rate, the effective rate of the UE can no longer be increased. At this time, the physical capacity of the UE is considered to be limited. Otherwise, the physical capability of the UE is considered to be unrestricted.
  • the adjustment decision unit 502 includes:
  • a fourth adjustment decision unit configured to: when the physical capability of the UE is limited, and the UE currently uses the number of large target retransmissions, the result of the adjustment decision is that the number of retransmissions of the UE is retransmitted by the large target. Adjust to the number of small target retransmissions; and/or
  • the adjustment result is that the current number of retransmissions of the UE is not changed.
  • the high-speed uplink packet access adaptive retransmission apparatus in this embodiment may further include: a determining unit, configured to: in the adjustment determining unit, adjust the result of the retransmission of the target retransmission times of the UE by the small target When the number of times is adjusted to the number of retransmissions of the large target, it is determined whether the channel unit resource is restricted. If the channel unit resource is not limited, the execution unit controls the number of retransmissions of the UE according to the result of the adjustment decision. Adjust between the predetermined number of large target retransmissions and the number of small target retransmissions.
  • the effective rate supported by the "large target retransmission times" is significantly lower than the "small target retransmission times"
  • the UE's rate will not decrease, and the target used by the UE Before the number of retransmissions is adjusted from “the number of retransmissions of small targets” to the "number of retransmissions of large targets”, the effective rate should be lower than a certain threshold, for example, lower than the limit rate for retransmission using the number of retransmissions of large targets.
  • the high speed uplink packet access adaptive retransmission apparatus may further include: a comparing unit, wherein the adjustment decision result of the adjustment determining unit 502 is to retransmit the target retransmission number of the UE by the predetermined small target
  • the effective rate of the UE is compared with a predetermined threshold, and if the effective rate of the UE is higher than a predetermined threshold, the execution unit 503 is notified not to change the target of the UE.
  • the high-speed uplink packet access adaptive retransmission apparatus may further include: a first convergence processing unit, configured to: at the execution unit 503, according to the result of the adjustment decision, the target retransmission number of the UE is at a predetermined large target weight And a second convergence processing unit, configured to: at the execution unit 503, target the UE according to the result of the adjustment decision The number of retransmissions is adjusted between the predetermined number of large target retransmissions and the number of small target retransmissions, and the hybrid automatic repeat request power offset is adjusted.
  • the description of the high-speed uplink packet access adaptive retransmission apparatus provided by the embodiment of the present invention, which is not repeated here.
  • the above description of the high speed uplink packet access adaptive retransmission method and apparatus provided by the present invention is only used to help understand the method and core idea of the present invention. Meanwhile, the general technology in the field In the following, the description of the present invention is not limited to the scope of the present invention.

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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé et sur un dispositif de retransmission adaptative de l'accès par paquets en liaison montante haut débit. Le procédé consiste : à obtenir le statut de ressources limitées; à effectuer la détermination d'ajustement conformément au statut de ressources limitées et aux temps actuels de retransmission à la destination de l'équipement utilisateur (UE); à ajuster les temps de retransmission à la destination de l'UE entre les grands temps et les petits temps de retransmission à la destination prédéterminés conformément au résultat de la détermination d'ajustement, les grands temps de retransmission à la destination étant supérieurs aux petits temps de retransmission à la destination. Le dispositif comprend : une unité d'obtention, qui est utilisée pour obtenir le statut de ressources limitées; une unité de détermination d'ajustement, qui est utilisée pour effectuer la détermination d'ajustement conformément au statut de ressources limitées et aux temps actuels de retransmission à la destination de l'UE; une unité d'exécution, qui est utilisée pour ajuster les temps de retransmission à la destination de l'UE entre les grands temps de retransmission à la destination et les petits temps de retransmission à la destination prédéterminés conformément au résultat de la détermination d'ajustement, les grands temps de retransmission à la destination étant supérieurs aux petits temps de retransmission à la destination. Le taux d'utilisation des ressources peut être efficacement amélioré.
PCT/CN2010/077762 2009-10-20 2010-10-15 Procédé et dispositif de retransmission adaptative d'accès par paquets en liaison montante haut débit Ceased WO2011047606A1 (fr)

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EP10824447.6A EP2493107B1 (fr) 2009-10-20 2010-10-15 Procédé et dispositif de retransmission adaptative d'accès par paquets en liaison montante haut débit
US13/449,967 US8902918B2 (en) 2009-10-20 2012-04-18 High speed uplink packet access adaptive retransmission method and apparatus

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CN200910205509.9A CN102045764B (zh) 2009-10-20 2009-10-20 高速上行分组接入自适应重传方法及装置
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US8902918B2 (en) 2014-12-02
EP2493107A1 (fr) 2012-08-29
EP2493107B1 (fr) 2017-12-20
US20120201121A1 (en) 2012-08-09

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